Subtract 90/42 from 54/8
1st number: 6 6/8, 2nd number: 2 6/42
54/8 - 90/42 is 129/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
54/8 = 54 × 21/8 × 21 = 1134/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
90/42 = 90 × 4/42 × 4 = 360/168 - Subtract the two like fractions:
1134/168 - 360/168 = 1134 - 360/168 = 774/168 - After reducing the fraction, the answer is 129/28
- In mixed form: 417/28
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